Journal: Astronomy and Astrophysics

  • Publication
    On the shell spectrum of 48 Librae
    Spectrograms of the variable star 48 Librae, taken near the last expected minimum, have been examined for irregularities of the shell line profiles. The...
  • Publication
    On the simultaneous optical and near-infrared variability of pre-main sequence stars
    For a complete understanding of the physical processes causing the photometric variability of pre-main sequence systems, simultaneous optical and near-IR...
  • Publication
    On the Sr I λ4607 Å Hanle depolarization signals in the quiet Sun
    The Hanle depolarization signals of Sr i λ4607 Å have been used to estimate the unsigned magnetic flux and magnetic energy existing in the quiet Sun photosphere...
  • Publication
    On the theory of MAG waves and a comparison with sunspot observations from CDS/SoHO
    We examine the influence of non-adiabatic effects on the modes of an isothermal stratified magnetic atmosphere. We present new solutions for magneto-acoustic...
  • Publication
    On the use of field RR Lyrae as Galactic probes: VII. Light curve templates in the LSST photometric system
    Context. The Vera C. Rubin Observatory will start operations in 2025. During its first two years, too few visits per target per band will be available, meaning...
  • Publication
    On the use of photometric redshifts for X-ray selected AGNs
    In this paper we present photometric redshift estimates for a sample of X-ray selected sources detected in the wide-field ( 2 deg^2), bright [ f_X(0.5{-}8 keV)...
  • Publication
    On the use of the Fourier transform to determine the projected rotational velocity of line-profile variable B stars
    Context. The Fourier transform method is a popular tool for deriving the rotational velocities of stars from their spectral line profiles. However, its domain...
  • Publication
    On the validity of the 630 nm Fe I lines for magnetometry of the internetwork quiet Sun
    Aims.The purpose of this work is to analyze the reliability of the magnetic field strengths inferred from the 630 nm pair of Fe i lines in internetwork quiet...
  • Publication
    On the variable spectrum of HD 45677 (FS Canis Majoris)
    { We have studied high-resolution optical spectra of the peculiar B[e] star HD 45677 (FS CMa) observed during 3 nights in October 1995. The main results of our...